Definition

Ephemeral infrastructure is a computing model in which runtime environments are created on demand, execute a bounded workload, and are destroyed immediately upon completion—leaving no residual state, memory artifacts, logs, or filesystem traces on the host. The environment does not persist between requests. Each invocation starts clean and ends with annihilation.

This is distinct from stateless architecture (which may still write logs or maintain connection pools) and from serverless computing (which may reuse warm containers across requests). True ephemeral infrastructure guarantees that the execution environment itself is non-recoverable after the workload finishes.

Why It Matters

Cloudflare processes over 57 million HTTP requests per second across its global edge network, with Workers executing in V8 isolates that spin up in under 5 milliseconds. AWS Lambda, by contrast, maintains warm containers that can persist for up to 15 minutes between invocations—a window during which memory contents, temporary files, and runtime state remain accessible to the host operating system.

That 15-minute window is not a footnote. It is the difference between infrastructure that forgets and infrastructure that remembers. In a 2024 study by Sysdig, 91% of runtime container scans revealed at least one known vulnerability, and 69% of containers had overly permissive access to host resources. Persistent containers are persistent attack surfaces.

For privacy-sensitive workloads—particularly AI inference where prompts may contain sensitive business logic, personal data, or proprietary information—the persistence of the execution environment directly determines the risk surface. If the container survives the request, so does every byte it processed.

How It Works

Ephemeral infrastructure enforces its guarantees through several mechanisms:

  1. Isolate-based execution: Instead of containers or VMs, workloads execute in lightweight V8 isolates (used by Cloudflare Workers) or microVMs (used by Firecracker/AWS Lambda). Isolates share no memory between invocations and are garbage-collected aggressively.

  2. No filesystem access: True ephemeral environments provide no writable filesystem. Cloudflare Workers, for example, operate without a /tmp directory or any persistent storage layer. Data exists in RAM for the duration of the request and nowhere else.

  3. Automatic key destruction: When combined with cryptographic shredding, ephemeral infrastructure ensures that encryption keys generated for a session are destroyed when the isolate terminates. Without the key, any data that was in memory becomes irrecoverable ciphertext.

  4. No log emission: Standard serverless platforms emit execution logs by default. Ephemeral infrastructure in a zero-persistence architecture explicitly disables all logging—request logs, error logs, access logs, metric telemetry—at the platform level.

  5. Edge distribution: By running at the network edge (Cloudflare operates in over 310 cities across 120+ countries), ephemeral infrastructure reduces the number of network hops—and therefore the number of systems that could intercept or cache data in transit.

Stealth Cloud Relevance

Ephemeral infrastructure is the runtime foundation of Stealth Cloud. Every request to the Stealth Cloud API executes in a Cloudflare Worker isolate that exists for the duration of that single request. There are no warm pools, no container reuse, no persistent process state.

This is what separates Stealth Cloud from public and private cloud models. Public cloud providers persist everything by default—logs, metrics, traces, error reports—because their business model depends on observability. Private cloud reduces the audience but maintains the same persistent architecture. Stealth Cloud inverts the default: nothing persists unless the user explicitly creates a mechanism for persistence, and even that mechanism (like KV storage with TTL) is designed to self-destruct.

In Ghost Chat, this means your AI conversation exists in a V8 isolate for approximately 200-2000 milliseconds per message exchange. When the response finishes streaming, the isolate is destroyed. The Stealth Cloud Manifesto puts it simply: if the server cannot remember, the server cannot betray.

The Stealth Cloud Perspective

Ephemeral infrastructure is the physical manifestation of a philosophical commitment: that compute environments should exist only as long as they are needed, and that the default state of a server should be ignorance—not because it chose to forget, but because it was never given the capacity to remember.